THE EXPERT DREAMERS & SCIENCE AGAINST MAN             Edited by Frederik Pohl & Anthony Cheetham                             Avon Books, 1st pb Printing & 1st Printing, 1968 & 1970             Condition: Very Good+ to Near Fine  & Very Good+                                                                                                                            Two science fiction anthologies: DREAMERS reprints stories written by scientists, and MAN has  original stories about mankind trying to deal with a new environment created by scientific advancements.   The former has light overall wear  &  a store stamp/price stamped on the first page.  The latter has a light reading crease, modest wear on spine edges & spine ends and light page toning.  Both are tightly bound with no interior creasing, tearing or writing.